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(-) Description

Title :  COMPLEX OF THE CAMELID HEAVY-CHAIN ANTIBODY FRAGMENT CAB-CA05 WITH BOVINE CARBONIC ANHYDRASE
 
Authors :  A. Desmyter, K. Decanniere, S. Muyldermans, L. Wyns
Date :  08 Nov 00  (Deposition) - 22 Nov 00  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.50
Chains :  Asym./Biol. Unit :  A,K
Keywords :  Antibody, Antigen, Complex, Immunoglobulin, Lyase/Immune System Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. Desmyter, K. Decanniere, S. Muyldermans, L. Wyns
Antigen Specificity And High Affinity Binding Provided By One Single Loop Of A Camel Single-Domain Antibody.
J. Biol. Chem. V. 276 26285 2001
PubMed-ID: 11342547  |  Reference-DOI: 10.1074/JBC.M102107200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CARBONIC ANHYDRASE
    Chains: A
    EC Number: 4.2.1.1
    Organism Common: CATTLE
    Organism Scientific: BOS TAURUS
    Organism Taxid: 9913
 
Molecule 2 - ANTIBODY HEAVY CHAIN
    Chains: K
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Fragment: CAB-CA05, VARIABLE DOMAIN
    Organism Common: ARABIAN CAMEL
    Organism Scientific: CAMELUS DROMEDARIUS
    Organism Taxid: 9838

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AK

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 1)

Asymmetric/Biological Unit (1, 1)
No.NameCountTypeFull Name
1ZN1Ligand/IonZINC ION

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHIS A:94 , HIS A:96 , HIS A:119 , THR A:199BINDING SITE FOR RESIDUE ZN A 1001

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1K:822 -K:894
2K:833 -K:905

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Ser A:29 -Pro A:30
2Pro A:201 -Pro A:202

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

Asymmetric/Biological Unit (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_CAH2_BOVIN_001 *R57QCAH2_BOVIN  ---  ---AL57Q
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ALPHA_CA_1PS00162 Alpha-carbonic anhydrases signature.CAH2_BOVIN105-121  1A:105-121

(-) Exons   (0, 0)

(no "Exon" information available for 1G6V)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:256
 aligned with CAH2_BOVIN | P00921 from UniProtKB/Swiss-Prot  Length:260

    Alignment length:256
                                                                                                                                                                                                                                                                                         258
                                                                                                                                                                                                                                                                                       257 |
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253   | |
           CAH2_BOVIN     4 HWGYGKHNGPEHWHKDFPIANGERQSPVDIDTKAVVQDPALKPLALVYGEATSRRMVNNGHSFNVEYDDSQDKAVLKDGPLTGTYRLVQFHFHWGSSDDQGSEHTVDRKKYAAELHLVHWNTKYGDFGTAAQQPDGLAVVGVFLKVGDANPALQKVLDALDSIKTKGKSTDFPNFDPGSLLPNVLDYWTYPGSLTTPPLLESVTWIVLKEPISVSSQQMLKFRTLNFNAEGEPELLMLANWRPAQPLKNRQVRG-F 258
               SCOP domains d1g6va_ A: Carbonic anhydrase                                                                                                                                                                                                                                    SCOP domains
               CATH domains 1g6vA00 A:4-260 Carbonic Anhydrase II                                                                                                                                                                                                                            CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...........hhhhhhhhhhh......ee.....ee......eeee.....eeeeee....eeeee.......eeee......eeeeeeeeee..........ee......eeeeeeeee.hhhhhhhhh.....eeeeeeeeeee..hhhhhhhhhhhhhhh....ee.....hhhhhh.....eee................eee...eeee..hhhhhh.............................ee.. Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------Q---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------ALPHA_CA_1       ------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g6v A   4 HWGYGKHNGPEHWHKDFPIAKGERQSPVDIDTHTAKYDPSLKPLSVSYDQATSLRILNNGHAFNVEFDDSQDKAVLKGGPLDGTYRLIQFHFHWGSLDGQGSEHTVDKKKYAAELHLVHWNTKYGDFGKAVQQPDGLAVLGIFLKVGSAKPGLQKVVDVLDSIKTKGKSADFTNFDPRGLLPESLDYWTYPGSLTTPPLLECVTWIVLKEPISVSSEQVLKFRKLNFNGEGEPEELMVDNWRPAQPLKNRQIKASF 260
                                    13        23        33        43        53        63        73        83        93       103       113       123 ||    134       144       154       164       174       184       194       204       214       224       234       244       254      
                                                                                                                                                   125|                                                                                                                                     
                                                                                                                                                    127                                                                                                                                     


Chain K from PDB  Type:PROTEIN  Length:126
                                                                                                                                                              
               SCOP domains d1g6vk_ K: Camelid IG heavy chain variable domain, VHh                                                                         SCOP domains
               CATH domains 1g6vK00 K:801-926 Immunoglobulins                                                                                              CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..eeeee..eeee...eeeeeeeee........eeeeee......eeeeeee..eeee.......eeeee......eeeeee..hhhhheeeeeee....hhhhhh..hhhhh.ee...eeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1g6v K 801 QVQLVESGGGSVQAGGSLRLSCAASGYTVSTYCMGWFRQAPGKEREGVATILGGSTYYGDSVKGRFTISQDNAKNTVYLQMNSLKPEDTAIYYCAGSTVASTGWCSRLRPYDYHYRGQGTQVTVSS 926
                                   810       820       830       840       850       860       870       880       890       900       910       920
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Class: All beta proteins (24004)

(-) CATH Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1G6V)

(-) Gene Ontology  (11, 11)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (CAH2_BOVIN | P00921)
molecular function
    GO:0004089    carbonate dehydratase activity    Catalysis of the reaction: H2CO3 = CO2 + H2O.
    GO:0016829    lyase activity    Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0038166    angiotensin-activated signaling pathway    The series of molecular signals generated as a consequence of angiotensin II binding to an angiotensin receptor on the surface of the cell, and proceeding with the activated receptor transmitting the signal to a heterotrimeric G-protein complex to initiate a change in cell activity. Ends with regulation of a downstream cellular process, e.g. transcription.
    GO:0006730    one-carbon metabolic process    The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
    GO:2001150    positive regulation of dipeptide transmembrane transport    Any process that activates or increases the frequency, rate or extent of dipeptide transmembrane transport.
    GO:0044070    regulation of anion transport    Any process that modulates the frequency, rate or extent of the directed movement of anions, atoms or small molecules with a net negative charge into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0051453    regulation of intracellular pH    Any process that modulates the internal pH of a cell, measured by the concentration of the hydrogen ion.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CAH2_BOVIN | P00921: 1v9e 1v9i 4cnr 4cnv 4cnw 4cnx 5a25 5ezt

(-) Related Entries Specified in the PDB File

1f2x STRUCTURE OF THE UNCOMPLEXED ANTIBODY